Rotary motor.



No. 809,637. PATENTED JAN. 9, 1906. I. H. SPENCER.

ROTA-RY MOTOR. APPLIGATION FILED JAN. 14, 1905.

wilma o UNITED STATES PATENT OEEICE.

IRA H. SPENCER, OE HARTFORD, CONNECTICUT, ASSIGNOR TO AMERICAN VATER SOFTENER COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A

CORPORATION OF NEW JERSEY.

ROTARY MOTOR.

Specification of Letters Patent.

Patented Jan. 9, 1906.

To all wwnt it 71u07/ cfm/cern.:

Be it known that I, IRA H. SPENCER, a citizen of the United States, and a resident of Hartford, in the county of Hartford and State of Connecticut, have invented a new and Improved Rotary Motor, of which the following is a specification.

My invention relates to a motor which is especially designed for use in devices in which a fluid, as water, is chemically treated for the purpose of preparing it for various uses; and the object of my invention is to provide an improved motor for such use and one that is especially adapted to be driven by the fluid which is to be chemically treated. A form of device in the use of which these objects may be attained is illustrated in the accompanying drawings, in which- Figure 1 is a view in side elevation of my improved motor with one wall of the shell removed and parts broken away to show construction. Fig. 2 is a view, on reduced scale, in central cross-section through the same.

While my improved motor is especially designed for use as heieinbefore described, it is not especially limited to such use, and in the accompanying drawings the numeral 3 denotes the motor as a whole that may be supplied with driving fluid from any suitable source of supply. My motor is especially designed for use in cases where the pressure of the fluid is not great, this condition frequently existing in apparatus, as above described, for the chemical treatment of fluids.

The numeral 16 denotes the shell of the motor, which may be constructed of any desirable material and of any desired shape as to the outer surface and having a chamber 17 of circular form. The shell or cylinder has mounted in each of its side walls a shaft 1S, and a cam-groove 19 is formed in one of the side walls of the shell. The shaft 1S supports a spider 20, having arms 21 projecting radially therefrom and a rim 22, connecting` said arms. Any desired number of arms may be employed, but three have been found by me to be amply sufficient for ordinary purposes. The rim 22 extends across the chamber 17 fitting each of the side walls quite closely in order to prevent the escape of water from the chamber 17 grooves 23 being formed in the sides or edges of the rim for the purpose of aiding in preventing the flow of water past the rim. Each of the arms 21 is provided on its opposite sides with recesses 24, in which a piston 25 is located. This piston is forked at its inner end, the branches or `arms lying in the recesses on the opposite sides of the arm 21. These recesses are joined by a recess extending across the rim. A roller 26 is pivotally mounted on each of the pistons, these rollers being located in the cam-groove 19, so that as the spider 20 is rotated the pistons will be drawn in and projected outward by reason of the formation of the cam-groove 19. Packing-grooves 25u are formed in the edges of the pistons, extending lengthwise thereof, as shown in Fig` 1 of the drawings. A supply-pipe 27 delivers water into the chamber 17, and an exhaust-pipe 2S conveys the water from the chamber. It will of course be understood that the water delivered through the pipe 27 is under somepressure; but it will be found that my improved construction provides a motor in which the power required to rotate the shaft 18 is very slight. An abutment 29 is located in the chamber 17, extending across the chamber to the rim 22.

In the operation of the device the water flowing through the inlet 27 into the chamber 17 fills the space between the abutment 29 and that piston which projects across the chamber 17 to the inner wall of the shell 16. The pressure of the water upon the piston causes the rim 22 and the spider 2O to be rotated until the piston reaches the point where the engagement of a roller 26 with the camgroove 19 begins to withdraw the piston. The water in the chamber 17 in advance of the piston has during this operationbeen exhausting through the pipe 28. As the piston 25 begins to withdraw from the inner wall of the shell 16 the next piston in its rear has been projected -across the chamber 17 and the operation is thus repeated, so long as the water is supplied to the chamber 17.

It will be seen from the construction of the parts that but little friction is caused in the operation ol the device. The pistons are drawn radially inward by mechanism appurtenant to each piston, and the cam-groove 19 is so arranged that when each of the pistons 25 comes opposite the abutment 29 they have been withdrawn, so that they may readily pass the abutment. It will be noted from the arrangement ofthe parts that lateral pres- IOO sure is being exerted upon but a single piston at a time, the pressure upon opposite sides of the other two pistons being practically equal, so that the movement of these two pistons is comparatively easy and free from friction.

What I claim as my invention, and desire,

t0 secure by Letters Patent, is-

l. In a Huid-motor, a shell having a cylindrical chamber communicating With supply and exhaust ports therefrom, with a camgroove located in a Wall of the chamber, a spider mounted to rotate in the chamber and including a rim forming the inner Wall of the chamber with arms connecting the rim to the hub, and extending across thechamber from side to side and with piston-recesses formed on the outer face of each of said arms and extending through the rim, pistons having branches at each end thereof located in said recesses and engaging the Wall of the shell, projections from said arms extending into the cam-grooves, and an abutment extending across the chamber.

2. In a fluid-motor, a shell having a cylindrical chamber communicating with supply and exhaust ports located therein with a cam `located in a wall of the chamber, a spider mounted to rotate in the chamber and including a rim and arms connecting the rim and hub, all extending across the chamber from side to side, with recesses extending across the rim near the outer end of each of the arms and radially-extending recesses along opposite sides of each of the arms opening into the cross- Wise recesses, pistons having branches located in the recesses on opposite sides of the arms with their ends located in the crosswise recesses, said pistons extending across the chamber from side to side, projections from the branches on the pistons into the camgroove, and an abutment extending across said chamber.

3. In a Huid-motor, a shell having a cylindrical chamber communicating with supply and exhaust ports located therein with a camgroove in the Wall of the chamber, a spider mounted to rotate in the chamber and including a rim and arms extending from the rim to the hub, all extending across the chamber from side to side, recesses extending through the rim and located on opposite sides of each of said arms, pistons each having branches located in the recesses on opposite sides of an arm, said pistons each extending across the chamber, concentric grooves formed in the edge of the rim, and grooves extending radially along the edges of said pistons.

. IRA II. SPENCER.

Witnesses:

ARTHUR B. JENKINS, L. E. BERKOVILEB. 

